<?php

namespace DNW\Skills\Tests;

use DNW\Skills\Rating;

class RatingTest extends TestCase
{
    public function testGetRatingParameters(): void
    {
        $rating = new Rating(100, 10, 5);
        $this->assertEquals(100, $rating->getMean());
        $this->assertEquals(10, $rating->getStandardDeviation());
        $this->assertEquals(50, $rating->getConservativeRating());
        $this->assertEquals("mean=100.0000, standardDeviation=10.0000", (string)$rating);
    }

    public function testPartialUpdate(): void
    {
        $rating = new Rating(100, 10, 5);
        $rating_prior = new Rating(100, 10, 5);
        $rating_new = new Rating(200, 10, 5);

        $rating_partial = $rating ->getPartialUpdate($rating_prior, $rating_new, 0.5);


        $this->assertEquals(150, $rating_partial->getMean());
        $this->assertEquals(10, $rating_partial->getStandardDeviation());
        $this->assertEquals(100, $rating_partial->getConservativeRating());
        $this->assertEquals("mean=150.0000, standardDeviation=10.0000", (string)$rating_partial);
    }
}